Berkman (Lower Ceyhan) Dam and Hydroelectric Power Plant

Project’s Overview

The Berkman Dam and Hydroelectric Power Plant, referred to as Lower Ceyhan is situated on the Ceyhan River in Osmaniye province, southern Türkiye. The dam has a crest length of 345 meters, and a structural height of 27 meters. This is the second phase of a power station completed in the cascade development of two infrastructure projects by the joint venture between Özaltın Construction Company and Nurol Construction Company, and led by the former.

The project is of composite design and consists of an earth embankment with a fill volume of 220,000 m³ combined with 238,000 m³ of concrete structures, located in the river channel. The earth embankment is on the right bank of the river. The concrete section of the dam, which has a total volume of 123,000 m³, comprises a power intake, integrated into the power house and positioned on the left bank of the river. An overflow concrete gated spillway with a volume of 115,500 m³ is located in between.

Also, in-scope was the construction of a semi-outdoor power plant, and the installation of three (3) pit-type horizontal axis Kaplan turbine-generator units, for a total installed power capacity of 39 MW. Furthermore, the project included the erection of a 170-kV switchyard to transfer the generated power to the electric transmission network. The project began in 2007, and full commissioning of all units was achieved in 2010.